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24 lines
1.1 KiB
24 lines
1.1 KiB
package core
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import (
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"github.com/tendermint/go-rpc/types"
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ctypes "github.com/tendermint/tendermint/rpc/core/types"
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"github.com/tendermint/tendermint/types"
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)
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func Subscribe(wsCtx rpctypes.WSRPCContext, event string) (*ctypes.ResultSubscribe, error) {
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log.Notice("Subscribe to event", "remote", wsCtx.GetRemoteAddr(), "event", event)
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types.AddListenerForEvent(wsCtx.GetEventSwitch(), wsCtx.GetRemoteAddr(), event, func(msg types.TMEventData) {
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// NOTE: EventSwitch callbacks must be nonblocking
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// NOTE: RPCResponses of subscribed events have id suffix "#event"
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tmResult := ctypes.TMResult(&ctypes.ResultEvent{event, msg})
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wsCtx.TryWriteRPCResponse(rpctypes.NewRPCResponse(wsCtx.Request.ID+"#event", &tmResult, ""))
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})
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return &ctypes.ResultSubscribe{}, nil
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}
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func Unsubscribe(wsCtx rpctypes.WSRPCContext, event string) (*ctypes.ResultUnsubscribe, error) {
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log.Notice("Unsubscribe to event", "remote", wsCtx.GetRemoteAddr(), "event", event)
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wsCtx.GetEventSwitch().RemoveListenerForEvent(event, wsCtx.GetRemoteAddr())
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return &ctypes.ResultUnsubscribe{}, nil
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}
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